- 1 How To Choose The Right Heater
- 2 Here Are The Best-Selling Gas Tankless Water Heaters in 2018
- 2.1 Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater
- 2.2 Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas
- 2.3 Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation
- 2.4 Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater
- 2.5 Eccotemp i12-LP Liquid Propane Indoor Tankless Water Heater
- 2.6 Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
- 2.7 Rinnai RL75iN Natural Gas Tankless Water Heater, 7.5 Gallons Per Minute
- 3 What Are the Benefits of Using Gas Tankless Water Heater
- 4 How To Choose The Best Gas Tankless Water Heater?
- 5 So How Do Gas Tankless Water Heaters Work?
- 6 Maintenance Tankless Gas Water Heater
- 7 Conclusion
Are you considering an upgrade to a gas tankless water heater? There are a number of benefits in this type of water heater. They are great to take with you on a camping trip and prove portability as well as comfortable water temperatures all year long. There are a number of portable water heaters available on the market.
Whether you need one for your RV or for your whole home, you’ll be sure to find the right one for you. These various water heaters have different emissions levels, GPM, and energy efficient ratings. There are units available that can work for the whole house, a small cabin or an RV.
We have gas and electric models available. Think about what your needs are and browse our selection of gas tankless water heaters.
These gas tankless water heaters are versatile and top-ranked choices. They are designed to work with gas, and many of them are safe to use and install inside of the home.
How To Choose The Right Heater
Before buying a heater you should keep in mind how much water you’ll be using. What is the main use of this device? Here are some estimates of how much water a minute some basic appliances use.
Toilet: ½ – gallons per minute
- Bathtub: 2 – 4 gallons per minute
- Shower: 1.5 – 3 gallons per minute
- Kitchen Sink: 1 – 1.5 gallons per minute
- Dishwasher: 1 – 3 gallons per minute
How much water do you see yourself needing in a day? Gas tankless water heaters provide water heating on demand. Some can heat 2 gallons of water a minute, and others heat up to 6 gallons of water in a minute.
One of the benefits of a gas tankless water heater is that it requires less storage space. When choosing a model, think about where you have to store it. Make sure you have enough storage room for a gas tankless water heater
Here Are The Best-Selling Gas Tankless Water Heaters in 2018
Even in freezing temperatures, you can use these outside. Just make sure that you have antifreeze to ensure that it stays functional. There are also indoor models available.
Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater
This unit is a natural gas indoor water heater. It is ideal for use in mobile homes or RVs. The capacity means it’s best for a home with about one or two bathrooms. The amount of water it produces at once is enough for washing a few loads of clothes, running the dishwasher or a few showers. It has low Nox emissions and has a flow rate of 6.6 gallons per minute.
This gas tankless water heater is small and compact. It is lightweight and can fit snugly in many spaces. The max BTU is 150,000 and the energy factor is a .85. It comes with an integrated error code indicator.
In colder weather, you might have to wait a few minutes to get warm water temperatures.
Replacement parts for this model are easily available. It also has a digital controller. This gas tankless water heater complies with environmental standards put in place in California and Texas. The vent system is advanced and designed with safety in mind.
It is easy to install and has recommended vent kits included. The unit has an included window where you can look through and view the flame. Look through it to ensure you have an even blue flame. It is convenient to use and one way to ensure that you will never run out of hot water.
One drawback is to get water hotter than 140 degrees, you need to purchase an add-on. The preset temperatures are up to 120 degrees or 125 degrees. The temperature of the water coming effects the gallons per minute. Cold well water will yield a flow rate of 3.3 GPM.
Maintenance includes yearly cleaning, such as running distilled white vinegar through it. After, purge the white vinegar and install a new screen filter.
Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas
Takagi is actually the first manufacturer to introduce gas tankless water heaters in the US market. This model is small and produces enough water for about 2 bathrooms in warmer climates. The functions it performs is similar to 40-gallon tanks.
It weighs about 38 pounds. It requires category 4 stainless steel venting. The Takagi T-KJr2-IN-NG has an energy factor of 0.81-0.83.
It has 19500-140,000 BTU and has up to 6.6 GPM at up to 350 degrees. At 3.3 GPM the temperature can rise to 700 F.
This unit runs on natural gas and needs venting to the outdoors. It can be vented horizontal or vertical. The activation rate is .5 GPM and a 110-volt electricity supply.
The warranty is only valid if a certified professional installs the unit so that is important to keep in mind.
The Takagi T-KJr2-IN-NG Indoor Tankless Water Heater has many technology functions that puts it among the best. It has a guarantee to deliver consistent water temperature with thermistors and has an air-fuel ratio sensor that will check the efficiency and reduces emissions that are harmful.
There are water temperature safety controls that will turn the unit off if the machine overheat. It also has surge protection. You can set the temperature and enjoy nice warm water.
There are DIP switched that makes it easy to adjust its altitude performance settings for 0-2000 ft, 2000 ft-4000 ft, and 4000ft-6000ft.
Because it is a small unit, it’s not suitable for home with more than 2 bathrooms. The parts warranty lasts for 5 years and the heat exchanger warranty is 10 years. You might need to purchase an additional exhaust pipe for it. It’s the smallest gas tankless water heater that Takagi has and is small and compact.
Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation
The Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater has a flow rate of 5.5/7.7 GPM. The energy efficient, low Nox emission unit is made to be an indoor water heater. It weighs 61 lbs. It has condensing technology that increases efficiency. It does not require an adapter and it has twin-pipe and concentric PVC venting options. Get hot water fast with the internal bypass line and integrated recirculation pump.
This unit is compact and efficient. It has an energy factor of .96 and it is available in 5 sizes. The variety of flow functions makes it great for commercial as well as residential applications. The higher flow rates have units that weigh more. This gas tankless water heater is ideal for whole house use because of how powerful it is.
The unit is very quiet and can provide almost unlimited hot water. The carbon dioxide emissions are low so it makes it environmentally friendly. It is powerful enough to supply hot water to multiple taps. Another benefit is that the parts are recyclable. It provides up to 60% energy savings when compared with other tanks.
The installation is very intricate and it might require the help of a professional to get it done right. If you’re handy, carefully following the manual will yield the best results.
It is made to maximize energy efficiency and is wall mounted. It’s about the size of a small suitcase. It’s powerful enough to be a whole house gas tankless water heater.
This unit has an electronic ignition, so there isn’t a pilot light that uses energy constantly. The heat exchanger has a 12-year warranty, and there is a 1-2 year servicing warranty for commercial use.
Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater
This water tank is portable and is made to go with you on camping trips. You can also use it at home. The versatility of this water tank makes it a great choice because you can take it with you while traveling or use it at home.
It comes with a number of automatic safety features like a flame failure device, anti-freezing protection and oxygen depletion shut off technologies.
The this gas tankless water heater is made to start up even if the water pressure is low.
You can also use this product in low temperatures and in the snow. It is made out of freeze-proof materials.
The BTU rate is high at 34000 btu/hour 1.32 gallons per minute of hot water output. It akes up to 60 seconds to get unlimited hot water.
The system comes with a convenient carry handle. It has the option to be operated on D batteries when electricity is not available. It can also work on modified water systems with a 12 volt water pump.
It’s made to be used more as an outdoor shower. It weighs up to 10.8 pounds.
Eccotemp i12-LP Liquid Propane Indoor Tankless Water Heater
This is a whole home gas tankless water heater. It does not require a pilot light, and it activates on demand. The flow rate is 3 GPM. It features a sleek and modern design with a black tempered glass front that has an easy to use LED display. The temperature controls are fully automatic and it includes child safe technology and an energy saving mode.
It has a state of the art touch screen for easy temperature control. This is ideal for cabins, smaller homes and cottages.
It’s a great choice for when you need an additional gas tankless water heater or if you don’t need that much water heated. It comes with a user manual,120 volt UL listed power cord that powers the internal exhaust fan and display. It uses low energy at 2 watts idling an 1.07 amps during operation, which makes it an ideal appliance for energy efficiency.
It is liquid propane powered and has fully independent gas and water controls. The temperature and water flow adjustment is fully automatic. It only uses the gas when the hot water is one. It’s field tested to work up to 5500 ft. The energy factor is 79 percent. The BTU range is 25000-80000.
It has a stainless steel vent kit. Included is a two-year manufacturer’s warranty. The gas tankless water heater weighs approximately 29 lbs. The electronic ignition system is tested safe and it does not have a pilot light. The hot water capacity range is 0.6 – 4.8 GPM.
Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
This stainless steel condensing heat exchanger is 94 percent energy efficient. The intelligent energy controls are made to increase safety and energy efficiency. It weighs 82 pounds.
The Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater has an advanced digital display. It’s also suited for more extreme weather conditions like high altitudes, cold weather and storms. It can perform well up to 9,840 ft. above sea level.
It has a minimum flow rate of .24 and a minimum activation flow rate of .40 GPM.
It has a two pipe vent system designed for PVC pipes. The system has added freeze protection. It has a remote digital control.
It is energy efficient and can cut up to 20%-30% off of your bill. It is highly productive and can have up to 9.4 gallons per minute. It also has exclusive water-saving settings, which can save homeowners up to 1100 gallons of water a year. It reduces water flow until it has been heated.
The Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater has low flow activation. It includes a recirculation pump that also saves water. The self diagnostic system has easy installation and service. Built-in Safety features prevent temperatures from getting too high.
Rinnai RL75iN Natural Gas Tankless Water Heater, 7.5 Gallons Per Minute
This system has between 10,300 – 180,000 BTU. The thermal efficiency is 82 percent. This unit is part of the luxury series, and it is designed for medium to large size homes. The energy efficiency rating is .82, which makes it eligible for a tax rebate in some places.
The gas tankless water heater can be installed in any room. The exhaust system expels horizontally and inputs vertically. It has a remote digital control. This gas tankless water heater can work with low water flow. It can connect with up to 25 tanks.
It has a sealed combustion system. Safety features include boiling protection, automatic frost protection, retaining flame, and factory equipped condensate trap and drain line. It offers a12-year limited warranty and it has a direct electronic ignition
What Are the Benefits of Using Gas Tankless Water Heater
By not having standing water, you can save a lot on water heating bills. There are small, point of use models as well as larger ones that are made to heat the whole house. The tank doesn’t empty as it filters through the device and warms that way.
Waterless heating tanks require simple maintenance like cleaning and filter changes.
Gas tankless water heaters don’t empty with a large bath. The supply is endless and takes just a few minutes to heat up. When you’re using the hot water heater, try to stagger the appliances that you are using it with. If you use more than one appliance that needs hot water at the same time, then it might be lukewarm.
However, it’s possible to have a lot of hot water at once if you choose a system that has the power to do that. Think about how much hot water you use daily and if you might need something that has a lot of power. Another option is to buy two gas tankless water heaters.
Gas tankless water heaters help you to have hot water and hot showers in a matter of minutes. Heating up cold water takes less time and energy than ever before. You can have comfortable showers, baths and wash dishes in warm water. It makes outdoor living easier and safer than before.
Hot water is a luxury and these gas tankless water heaters can help you to achieve a higher standard of living during the fall, winter, spring, and even summer. Now you can have hot water all year long without having to start a fire or make due with colder water.
Wash your clothes in warm water and be happy with the water temperature while living outdoors. You’ll be so happy that you invested in a quality gas tankless water heater. These 21-century items make heating water faster and easier than you’ve ever experienced.
Your whole family will appreciate the quality and speed of these gas tankless water heaters. Now, in any place and time, you can achieve comfortable water temperatures. Gas tankless water heaters are an amazing help for RV living and camping lifestyles.
These types of heaters are also known as demand water heaters. One benefit of using this type of water heater is that there is no heat loss from standing water. Thus, they are more energy efficient.
Your new gas tankless water tank will provide an endless supply of hot water that you can use again and again. Gas tankless water heaters are great additions to any home.
Many are portable, and they are designed to last a long time. Gas tankless water heaters can save energy costs by 30 to 50 percent, and on water costs more than $100. Tankless water heaters deliver hot water fast and reduce costs.
Another benefit of gas tankless hot water heaters is that they can have tax deductions upfront. This is because of the energy saving initiative in many parts of the United States. By installing a new water heater you will be using less water, less electricity, less natural gas and helping to conserve resources.
These gas tankless water heaters are often made from recyclable parts so they are sustainable in the long run.
Gas tankless water heaters can handle larger amounts of water than the electric tankless water heaters. They can heat up the water faster than the electric models.
They take up less space than traditional water tanks. They are lightweight and compact. Many can be mounted on the wall to clear the space where you store the tank. The water in the gas tankless water heater will never run out during a hot bath or while running the laundry.
You can have virtually an unlimited supply of water with using a gas tankless water heater. You can fill a large amount of water at once and have hot water on demand.
They use resources only when the water is being run so you don’t have to worry about wasting electricity or gas.
A tankless water heater can help to save on energy costs and delivers hot water almost instantly.
How To Choose The Best Gas Tankless Water Heater?
Keep in mind your financial needs when buying a gas tankless water heater. You might even be able to qualify for a tax rebate of up to $300 dollars, depending on your circumstances.
Are you going to be using an electric or gas water heater? Which one is better for you depends on your set up. If you have an electric hookup, then you might want an electric one. Gas tankless waterheaters might be better if you don’t have access to electricity.
Gas powered tankless water heaters cost less on average, and they have higher flow rates. Install for a gas tankless water heater might also be easier for a propane tank than for an electric one.
Most whole house tankless water heaters are gas powered because they are so much more powerful. They heat up much faster and are more reliable. There are many energy efficient and carbon safe gas tankless water heaters available. All use a combination of gas and electricity to run the hardware. Some have the option of being run on batteries for extra portability or use in case of a power outage.
Battery operated gas tankless water heaters are a great option for camping and for in the event you run out of electricity. They are perfect to have on hand so no matter what you can have a hot shower. You don’t realize how much you miss the hot water until you don’t have it around anymore.
Running multiple appliances on the gas tankless water heater on a gas system might be easier than on an electric tankless water heater. This could outweigh the costs of replacing a tank. Consider your needs and what would be ideal for you.
It’s possible to run more than one gas tankless water heater at one time to make it possible to have hot water running on multiple appliances. You could also upgrade to a system that is powerful enough to supply all of your hot water needs.
Even at home, a gas tankless water heater can help you save on water and energy. If you use less water, then expect to have energy savings up to 34%. If your family uses more than 41 gallons of water, a gas tankless water heater can save energy costs by up to 14%.
One safety tip to be mindful of is that gas-fired tankless water heaters require venting. Some have vents on the side that allow to you vent in situations where installing a new vent might not be practical.
So How Do Gas Tankless Water Heaters Work?
Other kinds of gas tankless water heaters have pilot lights which consumer fuel and make a flame. Electric ignition models are helpful in promoting efficiency. You can see if it has an intermittent ignition device, with options like hydro ignition. The ones that do not need a pilot light are more expensive but can be more energy efficient than tanks that need a pilot light.
Instead of storing water, a gas tankless water heater works by circulating cold water through a series of electric or gas powered coils. This part is called a heat exchanger. It turns on when you turn on a tap or a hot-water using appliance, and it turns off when you’re done using it.
For gas tankless water heaters that need to be stored in a compact space, find one that has a sealed combustion. The vents can be cool to touch that help it to be safer.
Most gas tankless water heater models require an electrical hookup because they have electrical components.
Check on the warranty of your device. You might want to buy one that has a longer warranty so as to protect your investment. See if it offers replacements. Warranties can run from 5 to 12 years.
One benefit is because they do not store water, there is less likelihood that there will be corrosion over time. Replacing parts in a gas tankless water heater is easier than in a storage water tank. This can help the system last longer.
Gas tankless water heaters are given a BTU, British thermal unit, input, and efficiency rating. This determines the gallons per minute that it utilizes, which is known as its flow rate. The BTU is equivalent to how much energy is needed to raise one pound of water by one degree F. Tankless water heaters with higher BTU rating can heat up more water faster.
When comparing models, if you need powerful water flow, then buy one with a higher BTU rating. Colder climates will take longer to heat up. Think about different measures like the gallons per minute and the BTU rating.
Sample Btu conversion factors
|Energy source/fuel||Physical units and Btu
|Electricity||1 kilowatthour = 3,412 Btu|
|Natural gas||1 cubic foot = 1,037 Btu
1 therm = 100,000 Btu
|Motor gasoline||1 gallon = 120,429 Btu²|
|Diesel fuel||1 gallon = 137,381 Btu|
|Heating oil||1 gallon = 138,500 Btu|
|Propane||1 gallon = 91,333 Btu|
|Wood||1 cord = 20,000,000 Btu³|
Maintenance Tankless Gas Water Heater
Over time, there might be build up you need to clean in the tankless water heater. Regular maintenance is required every 6-24 months. The process is easy and straightforward to do. Be sure to review the included guide with your unit to make sure that you are performing everything correctly.
Cleaning your gas tankless water heater will help it to run better and to keep it working well for a long time. To clear out mineral deposits in the line, you should do yearly maintenance on the gas tankless water heater. First, you have to turn it off and disconnect it from the water supply. Then, run white vinegar through the lines to purify the lines.
Because it is the source of your drinking water, you should only use natural cleaners in order to protect your health and the health of your family.
The flushing and draining process takes about 45 minutes and can help with clearing out any blockages.
The maintenance manual included with your unit will give you more direction on how to properly maintain it. Some might require filter changes so it depends on what gas tankless water heater you are using.
When buying a gas tankless water heater, think about where you’ll use it most, whether at home or for commercial purposes. Consider where you will place the tank and how you will be using it. Which appliances will you need the hot water for the most?
Think about the geographical conditions of where you live. You might need to find a tank that can suit your temperature and elevation levels.
There are many great choices available, some with excellent energy efficiency ratings. There are others with advanced safety controls for children and automatic sensors. Others are designed to work even at
low flow rates, or are especially designed to help you to conserve water or energy costs. A gas tankless water heater is one home improvement that can make a big difference in the way your home uses water.
With proper installation, many tanks are guaranteed to last more than 10 years. There are lightweight models as well as larger ones that can accommodate many different water using appliances at once.